Can the output dry contact relay wear with time?

Yes, the output dry contact can wear with time.

TX3-series dry SPDT UL operation zones are: 0.5Amp@120VAC to 5Amp@30Vdc and have mean time between failure of 1,800 cycles per hour or a total of 50,000 operations in one life time (100days @ 500 door-opens per day).

A typical SPDT relay wear points is the contact between the contacts or continuity between “common” and “NO” or “NC”.

After a while, in high traffic zones the resistance exceeds the input sensing of the device. From that, all that is required is to change dry-SPDT relay point for immediate corrective action. Other factors associated to dry-SPDT relay wear is high current feeds. In some cases, it’s the high inductive rush current that causes dry-SPDT relay failure. In this case, examination of the inrush current should be measured if fast relay wear has been noted.


Was this answer helpful to you?


Yes (0)    No (0)

Thank you! We will use your feedback to improve our frequently asked questions.
Thank you! We will use your feedback to improve our frequently asked questions.

Please contact Technical Support directly if you need further assistance.




GO BACK